Device for applying piston rings



H. S. WALDRON.

DEVICE FOR APPLYING PISTON RINGS.

APPLICATION FILED DEC. 7, 1920.

1,420,507. PIIIenIed June 20, 1922.

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T0 all whom I5/may coin-cern:

Be it knownlthat I, a' citizen of the United States, residing atSavannah, in the county of Chatham and State of Georgia', have inventedcertain new and useful Improvements in Devices for Applying PistonRings,of which the following is a specification.

This invention relates to devices for applying piston rings to thepistons of internal combustion or other engines.

As is well known, considerable difficulty is experienced in repairshops, in applying piston rings to the pistons of internal combustionengines before placing thepistons in the cylinders. This difficulty isencountered particularly in applying the rings,

to the lowermost grooves` the difficulty being in sliding the ring oversuccessive grooves to reach the`lowermost grooves.

An important object of the present invention is to overcome the abovementioned difficulties whereby rings may be applied to any of thegrooves of the piston with equal facility.

A further object of the invention is to provide such a device which issimple in construction, which may be easily operated.

Other objects and advantages of the invention will be apparent duringthe course ofthe following description.

In the drawings, forming a part of this specification and iny which likenumerals are employed to designate like parts throughout the same,

Figure 1 is a side elevation of the device showing the parts in normalposition,

Figure 2 is a section taken on line 2-2 of Figure 1, v

Figure 3 is a'perspective of the sleeve and associated elements,

' Figure 4 is a perspective of the body portion and stationary handle,and` Figure 5 'is a view similar to Figure 2 showing the use of a sleeveof a different slze.

In the drawings, wherein for the purpose of. illustration is shown apreferred embodiment of the invention, the numeral 10 designates thebody portion of the device em"- hodying a retaining ring 11 and handle12 preferably intergral therewith. As show n in Figures 2 and 4. theretaining ring 11 is provided at its lower edge with an inwardlyprojecting annular shoulder- 12, for a puri Specification of LettersPatent'.

cheap to manufacture, and

Patented June 2o, 1922*.

I Appiicatign fue@ p'cember 7, 1920. seriaiNo. 428,999;

pose to be described. The ring 11 is further provided upon its innenfacewith a pair of diametrically opposite pins 13.

As clearly shown in Figures 2 and 4, I provide a .sleeve 14 adapted tobe removably carried by the retaining ring 11. The sleeve 14 is providedadjacent its upper edge with a preferably integral coller 15 providingva shoulder 16 adapted to rest upon the annular shoulder 12 of theretaining ring 11. The collar 15 is provided with a pair ofdiametricalLly opposite slots 17 adapted toreceive the pins 13 of theretainingring 11. As clearly shown in Figure 3, the slots 14T include avertical portion 18 communieating with a substant-ially horizontalportion 19. As shown, the sleeve 14 .projects a substantial vdistancebelow the' retaining ring and is tapered adjacent its lower edge as at20.

Slidably mounted upon the sleeve `14, below the retaining ring 11, isanejector 21 in the form of a ring adapted to slide upon the sleeve 14.The ejector 21 is provided upon its outer face with a pair ofdiametrically opposite trunnions 22 for a purpose to be described.

Means for actuating the ejector 21 is provided in the form of anoperating member,

designated as a whole by the reference numeral 23. The 'operatingVmember 23 includes a semicircular portion 24, the inner vided withangularly arranged slots 25 adapted to receive the trunnions 22. A

pivot pin 26is provided and adapted to pass through ears 27 and 28carriedv by the handle 12 and the operating member 23 respectively. Theoperating member terminates outwardly in a movable handle 29. Thehandles 12 and 29 are preferably channeled, as shown in Figure 1f, andreceive vends 30 of a spring, the central portion of which is turnedabout the pivot pin 26. Thus it will be seen that the spring normally'separates the handles whereby the ejector 21 is normally maintainedagainst the lower face of the retaining ring 11.

The numeral 31 designates a piston having ring grooves 32. The innerdiameter of the sleeve 14 is preferably slightly greater than the outerdiameter of the piston so that the latter may be easily inserted withinthe sleeve 14, as' shown in Figure 1.

The sleeve 14 projects asuflieient distance below the. ring l1 and`ejeetor :21 to allow a sutlicient number ot' piston i'iiigs 33 to-beplaced thereon t'or one piston.

In Figure 5, l haveillustrated a sleeve 14 having a diameter somewhatless than. that shown in Figures l.' 2 and 3. and an ejector 21 having acorrespondingly smaller inner diameter. `Thus .it will be seen that thedevice may be supplied with a plurality of interchangeable sleeves 14whereby rings,

may be applied toypistons of different diaineters,

The operation ot the device isas follows: A plurality ot' rings 33 areexpanded slightly and placed upon the sleeve 14 as shown in Figure 2.The number ot' rings applied to the sleeve. preferably eori'espoiu'ls tothe number of grooves upon each piston.

The piston is then inserted within the sleeve Y' 14 and moved up 'ardlyuntil the lower edge 'of the sleeve is opposite the upper edge ot' thelowermost ring groove ot' the piston. The operator then moves the,handle 29 upwardly. the ejector moving downwardly until the lowerinostring on the sleeve 14 v lis released from the .sleeve and snaps intoposition in the groove. The. device is then moved upwardly until thelower edge of the sleeve is opposite the upper edge oi' the next groove,whereupon the operation is repeatedV and a ring is placed in the secondgroove fromJ the bottoni. This operation is 1epeated-tuitil eaeh ot' thegrooves has been provided with a ring.

Itis to be. understood that the form of my invention herewith shown anddescribed is to be taken as a preferred exampleof the same, and thatvarious changes in the shape, size and arrangement of parts may beresortedto without departing from. the spirit ot the invention or thescope ot' the subjoined claims. j y

Having thus described my invention, I claim:

1. In a device of the character described, a relatively stationary bodyportion includinga dependingsleeve, an ejector slidably mounted on saidsleeve and provided with ar pair of projecting pins. and a handlepivotally connected with said body portion and,

provided upon its innerl end with a yoke, said yoke being provided inits ends with slots adapted to ,receivesaid pins.

2. In a device ot' the character described, a relatively stationary bodyportion, a. depending s'leeve. means tor detacliably eonnec-ting theupper end ot' said sleeve to said a relatively stationary body portion'including a. retaining ring. said retaining ring being provided at itslower end with an inwardly extending annular shoulder. a sleeve providedat its uppei' end with an outwardly extending collar-adapted toy bereceived within said body.` portion, an ejector slidably mounted uponsaid sleeve, and a handle pivotally connected with said body portion andadapted to actuate said ejector.

4. In a ldevice of the character described, a relatively stationary bodyportion comprisingi a retaining ring and `stationary handle saidretaining ring being provided with inwardly projecting piiis.a dependingsleeve provided at its upper end with an outwardly projecting collar,said collar beingprovided with slots adapted to receive sai-'d .pins` an.ejector slidably mounted upon said ksleeve and provided with'dianietrically opposite trunnions. a movable .liandle, a seinicircularmember carried by said movable handle, rthe ends of saidsemicircularmember being provided with slots adapted to receive saidtrunnions. ears'carried by said handles, a pivotpin passing throughsaig/ between sai handles for rmaintaining said ejector `in the normalposition.

5. ln a device. ot' the `character described. a. relatively stationarybody. portion -eom- `prising a retaining iiiig andy astationary handleformed integral therewith..said retaining .ring being provided at itslower end with an inwardly. extending shoulder. the inner faceot' saidretaining ring being provided with inwardly extending pins, a. dependingsleeve providedadjacent its upper end with an outwardly projectingcollar adapted to rest upon the inwardly extending. shoulderof saidretaining. ring, said collar being provided with Slots adapted toreceive said pins, the lower end ot the outer tace of' said sleeve beingtapered. an ejector slidably mounted upon said sleeve` a movable handlepivoted to said bodyportion, a seiiiicircular member carried by saidmovabler handle and adapted to actuate `said ejector. and vmeans ltornormally maintaining said ejector it the normal position.

ln testimony whereof l aflix my signature.

iioimcr. s. wALDRoN.

ears. and a spring connected.

